My wife was doing really well on KI survival mode when all of a sudden it said "a sign in change has occurred" and she lost all progress because it kicked her back to the menu. I was sitting in a chair next to her, and all I did was move my head forward a bit! Even though I did NOT take her controller away, the only controller we have, the stupid Kinect thought I wanted to sign in on her controller!
Thanks for nothing Double Helix and Microsoft. Needless to say we turned off Kinect Sign In immediately.